Optimization of surface enhanced Raman scattering performance based on Ag nanoparticle-modified vanadium-titanium nanorods with tunable nanogaps
Optics Express, ISSN: 1094-4087, Vol: 30, Issue: 21, Page: 38613-38629
2022
- 14Citations
- 5Captures
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Metrics Details
- Citations14
- Citation Indexes14
- 14
- CrossRef10
- Captures5
- Readers5
Article Description
The combination of new noble metal nanomaterials and surface enhanced Raman scattering (SERS) technology has become a new strategy to solve the problem of low sensitivity in the detection of traditional Chinese medicine. In this work, taking natural cicada wing (C.w.) as a template, by optimizing the magnetron sputtering experimental parameters for the growth of Ag nanoparticles (NPs) on vanadium-titanium (V-Ti) nanorods, the nanogaps between the nanorods were effectively regulated and the Raman signal intensity of the Ag/V-Ti/C.w. substrate was improved. The proposed homogeneous nanostructure exhibited high SERS activity through the synergistic effect of the electromagnetic enhancement mechanism at the nanogaps between the Ag NPs modified V-Ti nanorods. The analytical enhancement factor (AEF) value was as high as 1.819 × 10, and the limit of detection (LOD) was 1 × 10 M for R6G. The large-scale distribution of regular electromagnetic enhancement “hot spots” ensured the good reproducibility with the relative standard deviation (RSD) value less than 7.31%. More importantly, the active compound of Artemisinin corresponded the pharmacological effect of Artemisia annua was screened out by SERS technology, and achieved a LOD of 0.01 mg/l. This reliable preparation technology was practically applicable to produce SERS-active substrates in detection of pharmacodynamic substance in traditional Chinese medicine.
Bibliographic Details
http://www.scopus.com/inward/record.url?partnerID=HzOxMe3b&scp=85139424717&origin=inward; http://dx.doi.org/10.1364/oe.474108; http://www.ncbi.nlm.nih.gov/pubmed/36258422; https://opg.optica.org/abstract.cfm?URI=oe-30-21-38613; https://dx.doi.org/10.1364/oe.474108; https://opg.optica.org/oe/fulltext.cfm?uri=oe-30-21-38613&id=507983
Optica Publishing Group
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